Posted by Gary in CO [162.158.69.162] on Wednesday, September 13, 2017 at 20:31:08 :
My buddy Mike puts mid grade octane gas in his mower and 2 vintage Cub Cadet tractors ('69, 71), 'cause a B&S manual says so. So... why would a low compression flathead need a higher octane. I call him Cap'n Slappy for good reason!
Opinions? I say Regular is more than adequate.
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